KNOWN: Temperature and velocity of engine oil. Temperature and length of flat plate. FIND: (a) Velocity and thermal boundary layer thickness at trailing edge, (b) Heat flux and surface shear stress at trailing edge, (c) Total drag force and heat transfer per unit plate width, and (d) Plot the boundary layer thickness and local values of the shear stress, convection coefficient, and heat flux as a function of x for 0≤x≤1 m. SCHEMATIC: Engine oil U∞ = 0.1 m/s T= 100 °C -Ts = 20 °C L=1m ASSUMPTIONS: (1) Critical Reynolds number is 5 × 105, (2) Flow over top and bottom surfaces. PROPERTIES: Table 4.5, Engine Oil (T₁ = 333 K): p=864 kg/m³, v = 86.1 × 106 m²/s, k = 0.140 W/mK, Pr 1081. =
KNOWN: Temperature and velocity of engine oil. Temperature and length of flat plate. FIND: (a) Velocity and thermal boundary layer thickness at trailing edge, (b) Heat flux and surface shear stress at trailing edge, (c) Total drag force and heat transfer per unit plate width, and (d) Plot the boundary layer thickness and local values of the shear stress, convection coefficient, and heat flux as a function of x for 0≤x≤1 m. SCHEMATIC: Engine oil U∞ = 0.1 m/s T= 100 °C -Ts = 20 °C L=1m ASSUMPTIONS: (1) Critical Reynolds number is 5 × 105, (2) Flow over top and bottom surfaces. PROPERTIES: Table 4.5, Engine Oil (T₁ = 333 K): p=864 kg/m³, v = 86.1 × 106 m²/s, k = 0.140 W/mK, Pr 1081. =
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:KNOWN: Temperature and velocity of engine oil. Temperature and length of flat plate.
FIND: (a) Velocity and thermal boundary layer thickness at trailing edge, (b) Heat flux and surface shear
stress at trailing edge, (c) Total drag force and heat transfer per unit plate width, and (d) Plot the boundary
layer thickness and local values of the shear stress, convection coefficient, and heat flux as a function of x
for 0≤x≤1 m.
SCHEMATIC:
Engine oil
U∞ = 0.1 m/s
T= 100 °C
-Ts = 20 °C
L=1m
ASSUMPTIONS: (1) Critical Reynolds number is 5 × 105, (2) Flow over top and bottom surfaces.
PROPERTIES: Table 4.5, Engine Oil (T₁ = 333 K): p=864 kg/m³, v = 86.1 × 106 m²/s, k = 0.140
W/mK, Pr 1081.
=
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